R8g instances, designed for memory-intensive applications like databases and in-memory caching, offer up to 30% performance gains over Graviton3-based R7g instances. New regional availability increases customer options for deploying high-performance workloads closer to end users.
These instances deliver up to 48xlarge sizes with 1.5 TB memory, 50 Gbps networking, and 40 Gbps EBS bandwidth, running on AWS Nitro System architecture that offloads virtualization tasks to dedicated hardware. The updates were announced on March 6, 2026, to enhance AWS's global compute infrastructure for memory-focused applications.
Source & further reading
Amazon EC2 R8g instances now available in additional regions ↗Source published 2026-03-06. This report was prepared with AI assistance from the linked primary-source material. Claims and limitations should be checked against the original announcement or research.